Tire-valve.



.0. F. R. BBOMBERG.

TIRE VALVE. APPLICATION FltED DEC. 2. 19].).

Paten M51 Dec. 11, 1917.

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Specification of Letters Patent.

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Application tiled member a, 1am I Serial n atria To all whomit mayconcern: Be it known that I, 'Osoen Ii. It. Bron:- nnne, a citizen of the United States, residing at San Diego, in the county of San Diego and State of California, have invented certain new and useful Improvements in Tire-Valves, of which the following is a specification.

My invention relates to valves forpneumatic tires for allowing the introduction of air into said tires and for preventing its exit therefrom, and the objects of my inven-' tion are: first, to provide a valve of this class which provides a double seal for preventing the exit of the air therethrough; second, to provide a valve of this class which eliminates the necessityvof a spring of any kind; third, to provide-a valve of this class which is very simple, economical of construction, durable and will not readily getnut of order; fourth, to provide a valve of this class, the rubber gaskets of which may be cut from ordinary rubber tubing, thus reducing the cost of manufacture to a minimum, and fifth, to provideavalve of this class which is applicable to the conventional tire stem now in use.

With hese, and other objects in view as will appear hereinafter my'invention con-- sists of certain novel features of construction, combination and arrangement of parts as will be hereinafter described in detail, and particularly set forth in, the appended claims, reference being had to the accompanying drawings and to the characters of reference thereon which form a part of this specification, in which:

Figure l is 'a sectional view of a valve stem showing my valve mounted therein in its open position. Fig. 2 is a side elevational view of the valve showing one of the askets in section to facilitate the illustration,

and Fig. 3 is a bottom view thereof.

Similar characters of reference referto similar parts throughout the several-views. The main valve element 1, movable valve element'2, gasket 8, gasket 4:, and gasket 5 constitute the principal parts of my valve.

The main valve element 1 is provided with a large portion at its top end 1 provided with a knurled outer surface to facilitate the turning of this main portion into the valve stem. Just below this enlarged portion 1 is a reduced, curved, tapering portion I over which is mounted the clas- The lower end of this main to seat againstthe gasket 5 in the movable piece 2. This main valve piece 1 is also provided with a central longitudinal hole I adapted to allow the passage of the air therethrough, and the upper end of this hole is enlarged providing a recess 1, In the hole 1 is mounted so as to reciprocate slightly therein the valve rod 2, the upper end of which is flattened at 2 to regulate the drop of the movable piece 2 the flattened portion 2 being larger than the hole It. In the upper surface of the movable piece 2 is provided an annular recess 2 in which is mounted the elastic gasket 5 which is preferably rubber, and it is held in position by means of the shoulder 2. The upper edge 2 of the movable piece 2 engages with the gasket 4: and the lower edge 1 of the main piece 1 engages with the gasket 5 forming a double seal valve, and the main valve piece 1 is screwed tightly into the upper end of the tire stem and the outer surface of the gasket 3 engages with the inner surface of the tire stem making a seal between said tire stem and main piece I when the same is screwed tightly therein.

Though I have shown and described a particular construction, combination and arrangement of parts, I do not wish to be limconstruction, durable and will not readily get out of order, that the movable portion 2 is of large area to provide sutlicient pressureto hold the valve sealed without assistance, except the pressure.

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stem, of relatively fixed and movable valve members contained within said stem, means for maintaining an air-tlght closure between i thesaid relatively fixed member and stem,

and a seat upon the opposing faces of each of said valve members arranged in substantially the same transverse plane and adapted to be simultaneously engaged by the other of said members when the valve is-closed.

2. In a valve for inner tubes of pneumatic tires the combination with a tubular stem,

of relatively fixed and movable valve members contained within said stem, means for maintaining-an air tight closure between the said relatively fixed member and stem, annular recesses 1n the opposing faces of both valve members, and suitable valve seats secured in said recesses in substantially the same transverse lane adapted to be simultaneously engaged by the other of said mem bers when the valve is closed.

3. In a valve for inner tubes of pneumatic tires the combination with a tubular stem, of a relatively fixed valve member threaded into said stem, means for maintaining an air-tight closure between the said member and stem, a movable valve member, and seats upon the opposing faces of each of said valve 'members arranged in substantially the same transverse plane and adapted I to be simultaneously engaged by the other of said members when the valve is closed.

impei able valve member having a valve-rod proof a relatively fixed lon 'tudinally perforated valve member threa ed into said stem, means=for maintainin between the said memier and stem, a movable valve member having a valve rod projecting outwardly through the aforesaid perforation in the first mentioned valve' member, seats upon the opposing faces of each of said valve members, and non-registrable annular flanges, pro'ecting oppositely from said valve members for engagm thelr respective seats upon the other of sai valve members. 6. In a valve for inner tubes of pneumatic tires the combination with a valve stem, of an adjustable longitudinally perforated valve member w1th1n said stem, suitable packing material interposed between the outer end of said valve member and the main valve stem, a movable valve member havin a valve-rod projecting outwardly througfi the aforesaid perforation in the first-mentioned valve member, a head upon the outer end of said rod of eater cross sectional area than that of sa d perforation, and a seat upon the opposing faces of each of said valve members arranged and adapted to be simultaneously engaged by the other of said members when the valve is closed.

In testimony whereof, I have hereunto set my hand at San Diego, California, this 27 day of November 1915.

osoAn F. R. BROMBERG.

an air-tight closure.

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